Magneto-rheological fluid damper with an external coil
First Claim
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1. A magneto-rheological (“
- MR”
) fluid damper comprising;
a damper body tube having an inner surface and containing a volume of MR fluid;
a piston assembly having an outer surface and disposed in the damper body tube to form a flow gap between the outer surface of the piston and the inner surface of the damper body tube; and
an external coil surrounding a portion of the damper body tube, the external coil capable of generating a magnetic field across at least a portion of the flow gap.
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Abstract
An MR fluid damper having a damper body tube containing a volume of MR fluid. A piston assembly is disposed in the damper body tube to form a flow gap between an outer surface of the piston and an inner surface of the damper body tube. An external coil surrounds a portion of the damper body tube. The external coil is capable of generating a magnetic field across at least a portion of the flow gap. In another aspect, the piston assembly includes a bearing in contact with the, inner surface of the damper body tube. The bearing maintains the piston assembly concentric within the damper body tube while permitting a flow of the MR fluid through the flow gap.
70 Citations
19 Claims
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1. A magneto-rheological (“
- MR”
) fluid damper comprising;a damper body tube having an inner surface and containing a volume of MR fluid;
a piston assembly having an outer surface and disposed in the damper body tube to form a flow gap between the outer surface of the piston and the inner surface of the damper body tube; and
an external coil surrounding a portion of the damper body tube, the external coil capable of generating a magnetic field across at least a portion of the flow gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
18.A magneto-rheological (“ - MR”
) fluid damper comprising;
a damper body tube having an inner surface and containing a volume of MR fluid; and
a piston assembly having an outer surface and disposed in the damper body tube to form a flow gap between the outer surface of the piston and the inner surface of the damper body tube; and
a bearing in contact with the inner surface of the damper body tube, the bearing maintaining the piston assembly concentrically located within the damper body tube and permitting a flow of the MR fluid through the flow gap.
- MR”
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18. The MR fluid damper of claim 18 wherein the piston assembly further comprises:
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a bearing plate mounted at one end of the piston assembly, the bearing plate having a peripheral surface extending through the flow gap and being in bearing contact with the inner surface of the damper body tube, and at least one opening to permit the flow of MR fluid past the bearing plate and through the flow gap. - View Dependent Claims (19)
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Specification